#------------------------------------------------------------------------------
#$Date: 2012-02-28 15:44:07 +0000 (Tue, 28 Feb 2012) $
#$Revision: 35913 $
#$URL: svn://www.crystallography.net/cod/cif/9/00/02/9000253.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/. The original data for this entry
# were provided the American Mineralogist Crystal Structure Database,
# http://rruff.geo.arizona.edu/AMS/amcsd.php
#
# The file may be used within the scientific community so long as
# proper attribution is given to the journal article from which the
# data were obtained.
#
data_9000253
loop_
_publ_author_name
'Wiegers, G. A.'
_publ_section_title
;
 The crystal structure of the low-temperature form of silver selenide
;
_journal_name_full               'American Mineralogist'
_journal_page_first              1882
_journal_page_last               1888
_journal_volume                  56
_journal_year                    1971
_chemical_formula_sum            'Ag2 S'
_chemical_name_mineral           Acanthite
_space_group_IT_number           14
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_cell_angle_alpha                90
_cell_angle_beta                 99.61
_cell_angle_gamma                90
_cell_length_a                   4.229
_cell_length_b                   6.931
_cell_length_c                   7.862
_cell_volume                     227.211
_exptl_crystal_density_diffrn    7.244
_[local]_cod_data_source_file    cifdata.txt
_[local]_cod_data_source_block   'global_262'
_cod_database_code               9000253
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
1/2+x,1/2-y,1/2+z
1/2-x,1/2+y,1/2-z
-x,-y,-z
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Ag1 0.28500 0.32000 0.43500
Ag2 0.75800 0.01500 0.30500
S 0.35900 0.23900 0.13400